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  _  __   _    _     _____    _    _    _____    
 | |/ // | || | ||  / ____|| | || | || |  __ \\  
 | ' //  | || | || / //---`' | || | || | |  \ || 
 | . \\  | \\_/ || \ \\___   | \\_/ || | |__/ || 
 |_|\_\\  \____//   \_____||  \____//  |_____//  
 `-` --`   `---`     `----`    `---`    -----`

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發送短信 : Impulse radio UWB circuits for real time location systems